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<div class="title">qwt_compass_rose.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_compass_rose.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_point_polar.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;qpainter.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qpainterpath.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">static</span> QPointF qwtIntersection(</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;    QPointF p11, QPointF p12, QPointF p21, QPointF p22 )</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;{</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="keyword">const</span> QLineF line1( p11, p12 );</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    <span class="keyword">const</span> QLineF line2( p21, p22 );</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    QPointF pos;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050e00</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    <span class="keywordflow">if</span> ( line1.intersects( line2, &amp;pos ) == QLineF::NoIntersection )</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <span class="keywordflow">if</span> ( line1.intersect( line2, &amp;pos ) == QLineF::NoIntersection )</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        <span class="keywordflow">return</span> QPointF();</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordflow">return</span> pos;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;}</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170">   34</a></span>&#160;<a class="code" href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170">QwtCompassRose::QwtCompassRose</a>()</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;{</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;}</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674">   39</a></span>&#160;<a class="code" href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674">QwtCompassRose::~QwtCompassRose</a>()</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;{</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;}</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">   44</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">QwtCompassRose::setPalette</a>( <span class="keyword">const</span> QPalette&amp; p )</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;{</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    m_palette = p;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;}</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">   50</a></span>&#160;<span class="keyword">const</span> QPalette&amp; <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">QwtCompassRose::palette</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="keywordflow">return</span> m_palette;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keyword">class </span>QwtSimpleCompassRose::PrivateData</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;{</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    PrivateData()</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        : <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>( 0.2 )</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        , <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>( 8 )</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        , <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>( -1 )</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        , <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>( 0.9 )</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    {</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    }</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;};</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21">   78</a></span>&#160;<a class="code" href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21">QwtSimpleCompassRose::QwtSimpleCompassRose</a>(</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="keywordtype">int</span> numThorns, <span class="keywordtype">int</span> numThornLevels )</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;{</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    m_data = <span class="keyword">new</span> PrivateData();</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    m_data-&gt;numThorns = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    m_data-&gt;numThornLevels = <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="keyword">const</span> QColor dark( 128, 128, 255 );</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="keyword">const</span> QColor light( 192, 255, 255 );</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    QPalette <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.setColor( QPalette::Dark, dark );</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.setColor( QPalette::Light, light );</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160; </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <a class="code" href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">setPalette</a>( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a> );</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292">   96</a></span>&#160;<a class="code" href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292">QwtSimpleCompassRose::~QwtSimpleCompassRose</a>()</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;{</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    <span class="keyword">delete</span> m_data;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;}</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160; </div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc">  108</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc">QwtSimpleCompassRose::setShrinkFactor</a>( <span class="keywordtype">double</span> factor )</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;{</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    m_data-&gt;shrinkFactor = factor;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;}</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">  117</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">QwtSimpleCompassRose::shrinkFactor</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;shrinkFactor;</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;}</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d">  131</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d">QwtSimpleCompassRose::draw</a>( QPainter* painter, <span class="keyword">const</span> QPointF&amp; center,</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> north, QPalette::ColorGroup cg )<span class="keyword"> const</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    QPalette pal = <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>();</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    pal.setCurrentColorGroup( cg );</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160; </div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <a class="code" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">drawRose</a>( painter, pal, center, radius, north, m_data-&gt;width,</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        m_data-&gt;numThorns, m_data-&gt;numThornLevels, m_data-&gt;shrinkFactor );</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;}</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>
<div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">  154</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">QwtSimpleCompassRose::drawRose</a>(</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    QPainter* painter,</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keyword">const</span> QPalette&amp; palette,</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keyword">const</span> QPointF&amp; center, <span class="keywordtype">double</span> radius, <span class="keywordtype">double</span> north, <span class="keywordtype">double</span> width,</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="keywordtype">int</span> numThorns, <span class="keywordtype">int</span> numThornLevels, <span class="keywordtype">double</span> shrinkFactor )</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;{</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> &lt; 4 )</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> = 4;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4 )</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> += 4 - <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160; </div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> &lt;= 0 )</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> / 4;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> &gt;= 1.0 )</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> = 1.0;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160; </div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> &lt;= 0.5 )</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a> = 0.5;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    painter-&gt;save();</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    painter-&gt;setPen( Qt::NoPen );</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160; </div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> j = 1; j &lt;= <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>; j++ )</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        <span class="keywordtype">double</span> step = std::pow( 2.0, j ) * M_PI / <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        <span class="keywordflow">if</span> ( step &gt; M_PI_2 )</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        <span class="keywordtype">double</span> r = radius;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> k = 0; k &lt; 3; k++ )</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        {</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;            <span class="keywordflow">if</span> ( j + k &lt; <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a> )</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;                r *= <a class="code" href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">shrinkFactor</a>;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        }</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        <span class="keywordtype">double</span> leafWidth = r * <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        <span class="keywordflow">if</span> ( 2.0 * M_PI / step &gt; 32 )</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            leafWidth = 16;</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160; </div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> origin = qwtRadians( north );</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;        <span class="keywordflow">for</span> ( <span class="keywordtype">double</span> angle = origin;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;            angle &lt; 2.0 * M_PI + origin; angle += step )</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        {</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            <span class="keyword">const</span> QPointF p = qwtPolar2Pos( center, r, angle );</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;            <span class="keyword">const</span> QPointF p1 = qwtPolar2Pos( center, leafWidth, angle + M_PI_2 );</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;            <span class="keyword">const</span> QPointF p2 = qwtPolar2Pos( center, leafWidth, angle - M_PI_2 );</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            <span class="keyword">const</span> QPointF p3 = qwtPolar2Pos( center, r, angle + step / 2.0 );</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            <span class="keyword">const</span> QPointF p4 = qwtPolar2Pos( center, r, angle - step / 2.0 );</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160; </div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            QPainterPath darkPath;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;            darkPath.moveTo( center );</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;            darkPath.lineTo( p );</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            darkPath.lineTo( qwtIntersection( center, p3, p1, p ) );</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160; </div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;            painter-&gt;setBrush( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.brush( QPalette::Dark ) );</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;            painter-&gt;drawPath( darkPath );</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160; </div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;            QPainterPath lightPath;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;            lightPath.moveTo( center );</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            lightPath.lineTo( p );</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            lightPath.lineTo( qwtIntersection( center, p4, p2, p ) );</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160; </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            painter-&gt;setBrush( <a class="code" href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">palette</a>.brush( QPalette::Light ) );</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;            painter-&gt;drawPath( lightPath );</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    }</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    painter-&gt;restore();</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;}</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8">  232</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8">QwtSimpleCompassRose::setWidth</a>( <span class="keywordtype">double</span> width )</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;{</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    m_data-&gt;width = <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">width</a>;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;width &lt; 0.03 )</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        m_data-&gt;width = 0.03;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160; </div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;width &gt; 0.4 )</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        m_data-&gt;width = 0.4;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;}</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160; </div>
<div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">  246</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">QwtSimpleCompassRose::width</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;width;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;}</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160; </div>
<div class="line"><a name="l00258"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a">  258</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a">QwtSimpleCompassRose::setNumThorns</a>( <span class="keywordtype">int</span> numThorns )</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;{</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> &lt; 4 )</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> = 4;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160; </div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4 )</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;        <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> += 4 - <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a> % 4;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160; </div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    m_data-&gt;numThorns = <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">numThorns</a>;</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;}</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160; </div>
<div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">  273</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">QwtSimpleCompassRose::numThorns</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;numThorns;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;}</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160; </div>
<div class="line"><a name="l00284"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549">  284</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549">QwtSimpleCompassRose::setNumThornLevels</a>( <span class="keywordtype">int</span> numThornLevels )</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;{</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    m_data-&gt;numThornLevels = <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">numThornLevels</a>;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;}</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160; </div>
<div class="line"><a name="l00293"></a><span class="lineno"><a class="line" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">  293</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">QwtSimpleCompassRose::numThornLevels</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;numThornLevels;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;}</div>
<div class="ttc" id="aclass_qwt_compass_rose_html_a04142768b55a3bfe9c17ea6878088674"><div class="ttname"><a href="class_qwt_compass_rose.html#a04142768b55a3bfe9c17ea6878088674">QwtCompassRose::~QwtCompassRose</a></div><div class="ttdeci">virtual ~QwtCompassRose()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00039">qwt_compass_rose.cpp:39</a></div></div>
<div class="ttc" id="aclass_qwt_compass_rose_html_a23bb2634090d12711102f0add67d1170"><div class="ttname"><a href="class_qwt_compass_rose.html#a23bb2634090d12711102f0add67d1170">QwtCompassRose::QwtCompassRose</a></div><div class="ttdeci">QwtCompassRose()</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00034">qwt_compass_rose.cpp:34</a></div></div>
<div class="ttc" id="aclass_qwt_compass_rose_html_a25f08ab6d05f4ad17b2e13395c60e7ca"><div class="ttname"><a href="class_qwt_compass_rose.html#a25f08ab6d05f4ad17b2e13395c60e7ca">QwtCompassRose::setPalette</a></div><div class="ttdeci">virtual void setPalette(const QPalette &amp;)</div><div class="ttdoc">Assign a palette.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00044">qwt_compass_rose.cpp:44</a></div></div>
<div class="ttc" id="aclass_qwt_compass_rose_html_a36888d96ff67ae500fdfdee9b68940ad"><div class="ttname"><a href="class_qwt_compass_rose.html#a36888d96ff67ae500fdfdee9b68940ad">QwtCompassRose::palette</a></div><div class="ttdeci">const QPalette &amp; palette() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00050">qwt_compass_rose.cpp:50</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a1439bd174d26b2f06baedc5fab048ed8"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a1439bd174d26b2f06baedc5fab048ed8">QwtSimpleCompassRose::setWidth</a></div><div class="ttdeci">void setWidth(double)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00232">qwt_compass_rose.cpp:232</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a157304c9a535126d33a80df9a9dad292"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a157304c9a535126d33a80df9a9dad292">QwtSimpleCompassRose::~QwtSimpleCompassRose</a></div><div class="ttdeci">virtual ~QwtSimpleCompassRose()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00096">qwt_compass_rose.cpp:96</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a2c4df8d87a99b4e84e077773bf60956c"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a2c4df8d87a99b4e84e077773bf60956c">QwtSimpleCompassRose::numThorns</a></div><div class="ttdeci">int numThorns() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00273">qwt_compass_rose.cpp:273</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a3dbac7f18d6b4de2c202ddc7761d20f2"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a3dbac7f18d6b4de2c202ddc7761d20f2">QwtSimpleCompassRose::width</a></div><div class="ttdeci">double width() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00246">qwt_compass_rose.cpp:246</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a45cbc152c610d096ecd4231b0f9ba549"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a45cbc152c610d096ecd4231b0f9ba549">QwtSimpleCompassRose::setNumThornLevels</a></div><div class="ttdeci">void setNumThornLevels(int)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00284">qwt_compass_rose.cpp:284</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a60278de80aa517aaa0ab7af22d262c30"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a60278de80aa517aaa0ab7af22d262c30">QwtSimpleCompassRose::shrinkFactor</a></div><div class="ttdeci">double shrinkFactor() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00117">qwt_compass_rose.cpp:117</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a66cc98efe5717eaf11fb0e713cd1aa21"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a66cc98efe5717eaf11fb0e713cd1aa21">QwtSimpleCompassRose::QwtSimpleCompassRose</a></div><div class="ttdeci">QwtSimpleCompassRose(int numThorns=8, int numThornLevels=-1)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00078">qwt_compass_rose.cpp:78</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a6ea00a06b07d87798e2630b489fb619e"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a6ea00a06b07d87798e2630b489fb619e">QwtSimpleCompassRose::numThornLevels</a></div><div class="ttdeci">int numThornLevels() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00293">qwt_compass_rose.cpp:293</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a81ac925ddcc4ba29de333237c1cf2b6d"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a81ac925ddcc4ba29de333237c1cf2b6d">QwtSimpleCompassRose::draw</a></div><div class="ttdeci">virtual void draw(QPainter *, const QPointF &amp;center, double radius, double north, QPalette::ColorGroup=QPalette::Active) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00131">qwt_compass_rose.cpp:131</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a841918913652b50fc85ea7e713daa37a"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a841918913652b50fc85ea7e713daa37a">QwtSimpleCompassRose::setNumThorns</a></div><div class="ttdeci">void setNumThorns(int)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00258">qwt_compass_rose.cpp:258</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_a9dfb04bbc8f776e18c88e5e03912249d"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#a9dfb04bbc8f776e18c88e5e03912249d">QwtSimpleCompassRose::drawRose</a></div><div class="ttdeci">static void drawRose(QPainter *, const QPalette &amp;, const QPointF &amp;center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00154">qwt_compass_rose.cpp:154</a></div></div>
<div class="ttc" id="aclass_qwt_simple_compass_rose_html_afaf84e19eb8eb2360306860b02d46cfc"><div class="ttname"><a href="class_qwt_simple_compass_rose.html#afaf84e19eb8eb2360306860b02d46cfc">QwtSimpleCompassRose::setShrinkFactor</a></div><div class="ttdeci">void setShrinkFactor(double factor)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__compass__rose_8cpp_source.html#l00108">qwt_compass_rose.cpp:108</a></div></div>
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